Apple invents U-Shaped finger accessory devices for Head Mounted Devices with Ultrasonic Sensors that sense motion, in-air gestures+
Today the US Patent & Trademark Office published a patent application from Apple that relates to a system that may include one or more finger devices with U-shaped housings that gathers sensor input and supplying haptic output. The accessory will work with Apples future mixed reality headset and smartglasses.
Source: patentlyapple.com